Dahlia 'Mexican Star'
"Dahlia × Cosmos"
Orders placed until 29 February 2026
You can expect your order in February/March 2026
Orders placed 1 March - 15 April 2026
You can expect your order in March/April 2026
Orders placed 16 April - 15 May 2026
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Shop app 4.6 (9,450 reviews)
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Description
Mostly we think of dahlias as being packed with hundreds of pointy petals, but often in the garden simplicity is better—and this is where Dahlia 'Mexican Star' comes in. It is in the single-flowered Dahlia category, meaning that it has just one layer of petals. But what petals! Blooming from mid-summer until the first frosts of autumn, the flowers—which are 6cm across—have petals of a mesmerizing, rounded, dark chocolate-red, and a bright yellow disc in the centre.
The blooms of Dahlia 'Mexican Star' are full of depth and drama—and they have a lovely, almost chocolate-like fragrance. Plants will grow to 90-120cm in height, and they are supported by dark stems and lightly bronzed, dark green foliage.
Dahlia 'Mexican Star' is likely to flower a little later than many other Dahlia varieties, so it usefully extends the colour season in your garden. Deadhead regularly to encourage more flowers. The blooms look stunning in a sunny mixed border or patio pot. Incidentally, they are perfect for cutting, and bringing indoors, too.
Dahlia 'Mexican Star' is a unique crossing/hybrid between Cosmos atrosanguineus and a Dahlia. It is also known as Dahlia × Cosmos 'Mexican Black'.
Key features
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Comes back every year
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Packed in paper bags
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Low maintenance
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May need winter cover
Specs & details
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Botanical name
Dahlia 'Mexican Star' (Sin)
Dahlia × Cosmos 'Mexican Black' -
Flower colour
Near-black, red, brown, yellow
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Tuber size
1
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Established height
1-1.5m
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Established spread
50cm-1m
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Plant spacing
1 tuber per m2
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Leaf colour
Green
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Habit
Upright
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Life cycle
Perennial
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Hardiness
Half hardy
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Years to establish
1st year
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Sunlight
Full sun
Partial shade -
Position
Sheltered
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Suitable for
Borders
Cottage gardens
Low maintenance gardens -
Soil acidity
Any
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Soil moisture
Free draining
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Soil type
Loam
Sandy
Multipurpose compost
Loam-based compost -
Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
No
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Mouse resistant
No
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Rabbit resistant
No
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Deer resistant
No
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Toxicity
No report
Plant calendar
| Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Orders placed until 29 February 2025
You can expect your order in February/March 2025Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
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